Branding, Identity & Logo Design Explained

 A logo is not your brand, nor is it your identity. Logo design, identity design and branding all have different roles, that together, form a perceived image for a business or product.
There has been some recent discussion on the web about this topic, about your logo not being your brand. 

Although this may be true, I haven’t seen any clarification of the differences between ‘brand’, ‘identity’ and ‘logo’. I wish to rectify this.
What is brand? – The perceived emotional corporate image as a whole. What is identity? – The visual aspects that form part of the overall brand. What is a logo? – A logo identifies a business in its simplest form via the use of a mark or icon.
To explain this in more detail, let’s start at the top – the brand.